Memory tests and DivX encoding
The CPU is run with a 1000MHz QDR FSB. That gives us a possible 8GB/s of bandwidth to play with and each set above, run in dual-channel mode, is capable of delivering substantially more. Even dual-channel DDR2-667 theoretically provides around 10.7GB/s, although factors such as MCH efficiency come into play to reduce this figure.
What we're seeing is that higher-speed modules do provide more bandwidth, according to ScienceMark 2.0's calculation, but still significantly short of the 8GB/s on offer.
Latency analysis shows the 2GByte OCZ pack in a good light, being the fastest of the bunch by some way.
Which leads to the fastest time in our DivX media-encoding test. With an identical CPU and FSB speed (yes, it bears repeating) the OCZ pack is 2 seconds quicker than DDR2-667 memory running with reasonable latencies. Not much, sure, but it's a question of bandwidth utilisation by the chipset and CPU. If an LGA775 CPU could take advantage of, say, 16GB/s at default speeds, we're sure higher-rated DDR2 memory performance would be more impressive.